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@inproceedings{DaGP14,
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	Year = 2014}

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	Year = 2002}

@inproceedings{QiYD07,
	Author = {Lu Qin and Jeffrey Xu Yu and Bolin Ding},
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@inproceedings{PaZC08,
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@article{CFKL12,
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@article{BrMa14,
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	Volume = 43,
	Year = 2014}

@article{ChLL14,
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@article{OgTP13,
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@inproceedings{BCMU13,
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@inproceedings{DaGK14,
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@techreport{LuGa08,
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	Year = 2008}

@inproceedings{YoWa11,
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	Year = 2011}

@inproceedings{ZhPC10,
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	Year = 2010}

@article{KlOD11,
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@inproceedings{LFLQ08,
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@inproceedings{PCSS04,
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	Year = 2004}

@inproceedings{OOPC04,
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	Year = 2004}

@inproceedings{TVBS02,
	Author = {Igor Tatarinov and Stratis D. Viglas and Kevin Beyer and Jayavel Shanmugasundaram and Eugene Shekita and Chun Zhang},
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	Year = 2002}

@inproceedings{ZaBS15,
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	Year = 2015}

@inproceedings{MaAK09,
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	Booktitle = {Proceedings of the 11th International Conference on Information Integration and Web-based Applications \& Services (iiWAS '09)},
	Pages = {176--184},
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	Year = 2009}
	
@inproceedings{AlJYK02,
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	Year = 2002}
	
@inproceedings{FLGP11,
	Author = {Leonidas Fegaras and Chengkai Li and Upa Gupta and Jijo J. Philip},
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	Title = {{XML} Query Optimization in {Map-Reduce}},
	Year = 2011}

@inproceedings{SWKC02,
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	Booktitle = {Proceedings of the 28th International Conference on Very Large Data Bases (VLDB '02)},
	Pages = {974--985},
	Publisher = {VLDB Endowment},
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	Year = 2002}

@inproceedings{JLWY02,
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	Booktitle = {Proceedings of the 18th International Conference on Data Engineering (ICDE '02)},
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	Year = 2002}

@inproceedings{Fran07,
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	Year = 2007}

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	Pages = {283--294},
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@inproceedings{CLKL12,
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